diff --git a/swh/loader/mercurial/tests/test_converters.py b/swh/loader/mercurial/tests/test_converters.py
new file mode 100644
index 0000000..b3d50e7
--- /dev/null
+++ b/swh/loader/mercurial/tests/test_converters.py
@@ -0,0 +1,76 @@
+# Copyright (C) 2018  The Software Heritage developers
+# See the AUTHORS file at the top-level directory of this distribution
+# License: GNU General Public License version 3, or any later version
+# See top-level LICENSE file for more information
+
+import unittest
+
+from swh.loader.mercurial import converters
+
+
+class TestParseAuthorConverters(unittest.TestCase):
+    def test_parse_author_no_email(self):
+        self.assertIsNone(converters.parse_author(None))
+
+    def test_parse_author_no_bracket(self):
+        actual_author = converters.parse_author(b'someone')
+
+        self.assertEqual(actual_author, {
+            'name': None,
+            'email': None,
+            'fullname': b'someone'
+        })
+
+    def test_parse_author_2(self):
+        actual_author = converters.parse_author(b'something <wicked')
+
+        self.assertEqual(actual_author, {
+            'name': b'something',
+            'email': None,
+            'fullname': b'something <wicked'
+        })
+
+    def test_parse_author_3(self):
+        actual_author = converters.parse_author(b'something >wicked')
+
+        self.assertEqual(actual_author, {
+            'name': None,
+            'email': None,
+            'fullname': b'something >wicked'
+        })
+
+    def test_parse_author_4(self):
+        actual_author = converters.parse_author(b'something <')
+
+        self.assertEqual(actual_author, {
+            'name': b'something',
+            'email': None,
+            'fullname': b'something <'
+        })
+
+    def test_parse_author_5(self):
+        actual_author = converters.parse_author(b'<only>')
+
+        self.assertEqual(actual_author, {
+            'name': None,
+            'email': b'only',
+            'fullname': b'<only>'
+        })
+
+    def test_parse_author_6(self):
+        actual_author = converters.parse_author(b'  <something>')
+
+        self.assertEqual(actual_author, {
+            'name': b' ',
+            'email': b'something',
+            'fullname': b'  <something>'
+        })
+
+    def test_parse_author_normal(self):
+        actual_author = converters.parse_author(b'someone <awesome>')
+
+        self.assertEqual(actual_author, {
+            'name': b'someone',
+            'email': b'awesome',
+            'fullname': b'someone <awesome>'
+        })